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Question 4 Unsaved A solid sphere starts from rest at a height 1.7 m above the...

Question 4 Unsaved A solid sphere starts from rest at a height 1.7 m above the base of an inclined plane and rolls down under the influence of gravity. What is the linear speed of the sphere's center of mass just as the sphere leaves the incline and rolls onto the horizontal surface? (Neglect friction.)

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Answer #1

we are looking for linear velocity, v
and we have
PE at top = linear KE + rotational KE at the bottom

where inertia of a solid sphere I is

while



by cancel and combining terms giving




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